Emergency sluice gate



Nov. 15, 1932. J. H. T. BORLAND EMERGENCY SLUICE GATE Filed June 15, 1951 2 Sheets-Sheet /fvvnvro J 7.' B-oRLA/vb Nov. 15, 1932. .1. HA T. BORLAND' EMERGENCY` SLUICE GATE Filed June 15. 1931 2 Sheets-Sheet M Q J t L @w Patented Nov. 15, 1932 JOSEPH HARLING TURNER BORLAND, OF KILMARNOCK, SCOTLAND EMERGENCY SLUICE GATE Application led June 15, 1931, Serial No. 544,588,`and in Great lritain July 23, l1930.

This invention relates to a portable emergency sluice gate of the type comprising a frame litted with a series of parallel rollers,

and primarilydevised for closing the inlet to i a discharge culvert or tunnel of a storage dam or the like for the purpose of dewatering the culvert and its permanent control sluice to permit inspection and control of these parts.

In the construction described in the speciication of Letters Patent No. 1,797,042, dated 17th March, 1931, the gate frame was composed of upright angle end posts held apart by diagonal bracing bars, and the rollers were made in the form of solid round bars retained in relative position by means of end bearings.

The said bracing bars were fixed to the upstream side only of the frame, so that in effect the end posts constitute a cantilever.

The present invention is designed to ob-viate any possibility, when the gate is subjected to the water pressure, of the hydraulic forces acting on the out-side of the end posts tending to bend them inward against the ends of the rollers and thus setting up frictional .3 resistance to the free rolling motion of the gate.

According to the present invention the rollers are constructed as hollow cylinders with bushed ends penetrated by central axles En on which the rollers revolve and which retain the rollers in their relative position and also function as distance pieces between the end posts which they support on their centre line, thus departing from the cantilever form 3f' above referred to and obtaining greater strength to resist the external hydraulic pressure load when the gate is in closed position and submerged.

The rigid construction of central support 4U to the end posts obviates any possibility of inward deflection and consequent end friction on the rollers, thus contributing to the freedom of rolling motion of the gate.

A sluice gate constructed in accordance with the invention is illustrated in the accompanying drawings in which Fig. 1 is an elevation looking upstream on the gate, Fig. 2 a half plan half horizontal section, Fig. 3 an elevation at right angles to Fig. 1, Fig. 4 a section on the line 4--4 of Fig. 1, and Figs. 5

and 6 fragmentary Vdetaillviews drawn to a larger scale.

As shown the rollers 1 are constructed as Vhollow cylinders penetrated by axlesr 2 on which the rollers 1 revolve and which retain 55 the rollers in their relative position and also function as distance pieces rigidly interconnecting the end posts 3.0i the gate frame, the axles having end portions of reduced diameter tted to orifices in the end posts so oo as to present shoulders maintaining clearance between the rollers 1 and the end posts 3 and effectively relieving the rollers of end thrust. s

The rollersl are equipped at their ends with bushes 4 journalled on bearing sleeves 5 embracing the axles 2.

yThe staunching members 6 which are disposed parallel to the rollers 1 and which serve to seal the clearances between adjoining rollers 1 are constituted as steel tubes.

The upper ends of the end posts 3 are bridged by means 7 between which are mounted two lifting rope pulleys 8.l

What I claim is An emergency sluice gate for the purpose specilied comprising a frame having end posts, a series of parallel axles perpendicular to said end posts and forming distance pieces rigidly interconnecting said end posts, a series of closely spaced rollers formed as hollow cylinders journalled on said axles, with clearance between adjoining rollers, said axles presenting shoulders abutting on said end posts, maintaining clearance between said rollers and said end posts, and staunching members parallel to said rollers and serving to seal the clearance between adjoining rollers, said rollers and staunching members forming in effect an uninterrupted closure, said frame, axles, rollers and staunching members constituting a self-contained portable unit.

In testimony whereof I have signed my name to this specification.

JOSEPH HARLING TURNER BORLAND. 

